baber/WOPTO huggingface dataset:
Patent GB-817568-A (GB)
Title: Improvements in or relating to pulse-width discriminating circuits
Inventor: HORWOOD WILLIAM WALTON LAURIE
IPC: G01S7/292
Filed: 1946-07-19
Abstract: 817,568. Pulse discriminating circuits. MINISTER OF SUPPLY. July 19, 1946, No. 21643/46. Class 40 (6). In a pulse-width discriminating circuit, pulses of desired width are selected by deriving separate signals from each received pulse and applying them with predetermined relative time delay to a coincidence circuit. The edges of negative pulses applied at " IN," Fig. 1, are differentiated at C<SP>1</SP>R<SP>1</SP> and applied directly to the inner grid of a coincidence valve V<SP>2</SP> and indirectly to the outer grid of this valve after being delayed and reversed by a delay network DN<SP>1</SP> and a valve V<SP>1</SP>, the delay being equal to the width of the desired pulse. V<SP>2</SP> is biased to give an output when both grids simultaneously receive positive signals, derived from the back edge of a pulse and the delayed reversed front edge of the same pulse. In a modification, Fig. 3 (not shown), the delayed reversed signal is obtained from an intermediate tap of a delay network by reflection from the short-circuited end thereof. Fig. 5 shows an arrangement suitable for pulses having edges that are less sharp and rejects long pulses. Negative pulses are applied to the grid of V<SP>1</SP> and signals derived from the cathode of this valve are applied through opencircuited and short-circuited delay networks DN<SP>1</SP>, DN2 to the outer and inner grids of a coincidence valve V<SP>2</SP>, which is biased to give an output only when a reversed reflected signal from DN<SP>2</SP> coincides with a pause between direct and reflected signals from DN<SP>1</SP>. In a further modification, Fig. 7, negative pulses are applied directly to the outer grid of a coincidence valve V<SP>12</SP> and a signal generated by shock-exciting a ringing circuit L<SP>1</SP> is applied to the inner grid thereof after a delay equal to the desired pulse width, this delay being determined by C<SP>3</SP>R<SP>3</SP> and the cathode potential of V<SP>2</SP>. The recurrent pulses cause a signal on the inner grid of V<SP>12</SP> to open this valve just after the signal on the outer grid disappears. Short pulses end before a signal can be generated by L<SP>1</SP>. With long pulses, V<SP>12</SP> will not open when the signal appears on the inner grid because of the negative signal that remains on the outer grid.
Patent GB-757660-A (GB)
Title: Improvements relating to electric cells
IPC: H01M6/08
Filed: 1954-07-23
Abstract: 757,660. Batteries. CHAN MING LEAM. July 23, 1954, No. 21649/54. Class 53. A dry cell has a central electrode 3 surrounded by active material 2 contained in a cup-shaped electrode 1 which is surrounded by an impervious sheath 11 of plastic material which is sealed round the upper end of the electrode 3 and open at its lower end to expose the bottom of the electrode 1. The upper end of the electrode 1 is closed by an impervious. disc 4 held between the inturned edge 6 of the electrode and a bead 5 formed in its wall. The cap 8 of the central electrode is formed with a flange 9 which carries a rubber sealing ring 10 abutting against the underside of the top of sheath 11. The sheath may be made of polyvinyl chloride and is formed with a flange 12 at its lower end. The lower end of the electrode 1 may be protected against corrosion by being made thicker than the walls or by the addition of a plate 13. The electrode 1 and plate 13 may be made of zinc if the cell is a primary cell or of steel in the case of a secondary cell of the alkaline type.
Patent GB-597671-A (GB)
Title: Improvements in or relating to electric signal transmission systems
IPC: H04L21/00
Filed: 1945-08-23
Abstract: 597,671. Electric signal transmission systems ; thermionic distributers. STANDARD TELEPHONES & CABLES, Ltd. Aug. 23, 1945, No. 21661. Convention date, June 18, 1943. [Classes 40 (iii) and 40 (v)] A system for producing signals corresponding to a character to be transmitted comprises an electronic distributer including a number of sequentially operative gas-discharge valves generating a series of sequentially timed impulses which are applied to a corresponding number of normally non-conductive gate valves individually associated with energy sources of different frequencies, means for starting and stopping the electronic distributer and switching means selectively interconnecting the respective outputs of the gas-discharge tubes to the control circuits of the gate valves toapply the sequentially timed pulses in accordance with the signals representative of the character to be transmitted. In the system described the transmission time of a character is divided into a number of intervals during which a combination of one or more different frequencies are transmitted simultaneously, the frequencies which are transmitted during the successive time intervals being determined by appropriate switch members 40a ... 40g, 42a ... 42g, 44a ... 44g disposed on the shafts of the keys 38 of the transmitting keyboard 10 and selectively connecting the outputs of the valves 14a ... 14g to the gate circuits 22a ... 22g. The first valve 14a of the impulse distributer is operated by a battery 36 connected to its grid by a switch 30 mounted on each key 38 and initiates the operation of the second valve 14b and so on until the seventh valve 14g is operated. An additional valve 14h extinguishes the valve 14g and itself is automatically extinguished after a predetermined time through a resistance capacity network 16 connected between its cathode and ground to terminate the cycle. The impulses produced at the cathodes of the valves 74a ... 14g are applied to resistance banks 20a ... 20g selectively connected to the gate circuits by the switches carried by the keys. In a modification, Fig. 5, to provide limited repetition of the impulse cycle, a switch 30<1> mounted on each key lever 38 initially closes contacts which operate the first valve 14a of the distributer and subsequently closes contacts in circuit with a condenser 206. The valve 14h which operates at the end of a cycle is connected to the valve 14a to effect a repetition of the cycle, and applies to the condenser 206 a charge which after a number of cycles, for example ten, is built up to a value sufficient to extinguish the valve 14h and to prevent the valve 14a from firing. The receiver, Fig. 3 (not shown), operates as described in Specification 587,405.
Patent GB-1488777-A (GB)
Title: Fume collecting canopies
IPC: C21C5/40
Filed: 1976-05-25
Abstract: 1488777 Fume collecting canopy NORTHWESTERN STEEL & WIRE CO 25 May 1976 21687/76 Heading F4X A ladle canopy assembly collects and vents gases during pouring of molten metal into a ladle 10 from a tilting electric furnace (35), Fig. 2 (not shown). The canopy assembly is arranged for pivotal movement into and out of superimposed relationship with the ladle and includes a framework 16, 17 with panels 29 hinged thereto at 30. The framework 16, 17 is secured within a collar 18 which is pivotally mounted by a shaft 26. The collar carries a duct 19 which can be connected to a stationary duct 20 by means of a releasable seal 21. The duct 20 leads to a scrubber (36) and blower (37). For receiving a pouring spout (44) associated with the furnace (35), the canopy has an opening (41) devoid of panels 29.
Patent GB-665524-A (GB)
Title: Improvements in bee feeders
IPC: A01K53/00
Filed: 1949-08-22
Abstract: 665,524. Bee-feeding appliances. MEAD MAKERS, Ltd., and GAYRE, G. R. Aug. 14, 1950. [Aug. 22, 1949] No. 21745/49. Class 5(ii). Syrup from a reservoir 3 passes through a pipe 2 to a tray 1 of a size and shape to be insertable in a hive entrance. The tray may contain sponge rubber controlling the syrup flow to the protruding edge 5. Flow through the pipe 2 may be controlled by a clip 6, or by leading it through a well as in a bird-fountain.
Patent GB-819403-A (GB)
Title: Laminated magnetic cores and method of manufacturing the same
IPC: H01F41/02
Filed: 1957-07-09
Abstract: 819,403. Electromagnet cores. NAIMER, H. July 9, 1957 [July 28, 1956], No. 21790/57. Class 35. [Also in Groups XXII and XXXVII] A laminated magnetic core 1 is held together by tie rods 2 of moulded thermoplastic material such as a superpolyamide which softens at temperatures well above those at which the core is used. The laminations are held together whilst the plastic material is injection-moulded so as to fill the holes in the laminations thus forming the tie rods 2 and a web 3 at each side. Where the core is required to have a plane face, as in a relay, the laminations are assembled with their edges against a jig 5 before moulding the plastic material, when the holes need not be in exact alignment. The webs 3 have feet 4 for mounting the assembly.
Patent GB-1152800-A (GB)
Title: Inter-Uterine Device
Inventor: BURDICK CHARLES LALOR
IPC: A61F6/14
Filed: 1967-05-10
Abstract: 1,152,800. Intra-uterine devices. C. L. BURDICK. 10 May, 1967 ,[6 June, 1966], No. 21805/67. Heading A5R. An elastically deformable intra-uterine contraceptive device comprises an endless material in the shape of three loops which are interconnected such that the two terminating portions of each loop continue smoothly into the terminating portions of the other loops. The loops may be, arranged relative to each other in various ways (Figures 3-8 not shown) and an indicating cord may be attached to the device at one point 27 or at two points. The device is made of a single or multi-filament inert material which may be an exemplified synthetic material or cat or silk-worm gut and the device may be formed from an annular element (Figure 1, not shown) by bending it on a template (Figure 2, not shown) and then subjecting it to heat treatment. The device may include radiation opaque material, such as barium sulphate, or may be of electrically conductive material so that it may be detected by induction. An introducer for the device (Figure 9, not shown) comprises a plunger rod (46) moving in a tubular member (42) which is rigid except for a flexible end (44) to be inserted into the uterus.
Patent GB-383595-A (GB)
Title: Improvements in and relating to light responsive apparatus
IPC: H01J40/14
Filed: 1932-08-03
Abstract: 383,595. Light current relays. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Menger, F. B. ; 1354, Myron Street, Schenectady, New York, U.S.A.) Aug. 3, 1932, No. 21808. Convention date, Aug. 3, 1931. [Class 38 (v).] Electrostatic relays.-An electrostatic relay comprises fixed plates 6, a dielectric 7, and plates 8 pivoted on and movable about a shaft 9 carrying a contact 12 to control the relay 14.
Patent GB-1425836-A (GB)
Title: Compositions for supplying magnesium to animals and a process for their production
IPC: A23K10/33
Filed: 1973-05-08
Abstract: 1425836 Feed supplements I C I AUSTRALIA Ltd 8 May 1973 [10 May 1972] 21824/73 Heading A2B [Also in Division A5] A composition in the form of a solid, rigid "block" for combatting hypomagnesaemic tetany in animals is prepared by heating together molasses and magnesium oxide, casting the molten mix into blocks and cooling. Preferably, the temperature of the mix does not exceed 90‹C and water may be added to cause liquifaction without the use of excessive temperatures. Other therapeutic or dietary supplementing ingredients may be included, in particular phosphates and sources of non-protein nitrogen, e.g. urea and salts thereof, biuret and methylene diurea. Trace elements and additional sources of carbohydrate may also be included. The block may be used as a "lick" or it may be added to animal feed stuffs when in the form of small particles, e.g. pellets.
Patent GB-1384844-A (GB)
Title: Handling arm for loading and unloading fuel assemblies within a nuclear reactor
IPC: G21C19/16
Filed: 1973-05-09
Abstract: 1384844 Fuelling reactors COMMISSARIAT A L'ENERGIE ATOMIQUE 9 May 1973 [18 May 1972] 22103/73 Heading G6C A device for handling fuel assemblies within a nuclear reactor, e.g. a fast reactor, the core 1 of which comprises fuel assemblies 2 in adjacent vertical relation and surrounded by a reactor vessel 3, includes two handling arms 19, 20 having synchronized movements. The vessel 3 is provided with eccentric rotatable plug 5 which is in turn provided with an eccentric through-hole 6 in which is placed a block 7 for supporting the complete handling device. The handling arms 19, 20 have vertical tubular portions 21, 22 which extend through holes 17, 18 in the block 7 and are guided in axial motion by rollers 23. Projecting bosses 24 at the lower ends of the holes 17, 18 and a sealing assembly 25 at their upper ends ensure leak-tightness. The tubular portions 21, 22 are coupled by means of a sliding system comprising a stirruppiece 28 rigidly fixed to portion 21 and supporting guide rollers 29 which are applied against portion 22. At its lower end, the tubular portion 21 is provided with a support bracket 31 terminating in a guide sleeve 32 containing a grab 33. Similarly, the tubular portion 22 is provided with a support bracket 34, this being located in the same vertical plane as the bracket 31 and terminating in a guide tube 35 disposed coaxially with and beneath the sleeve 32 of the grab 33. Displacement of the handling arms 19, 20 is provided by a differential drive system 27 (illustrated in detail in Fig. 2, not shown) which includes electromechanical brakes whereby movements either of the grab 33 or the guide tube 35 can be carried out independently. Normally, the handling arms 19, 20 move in synchronism and in opposite directions with the grab 33 engaging the head of a fuel assembly 2a and the guide sleeve 35 resting on the surrounding fuel assemblies 2. Since the tubular portions 21, 22 are rigidly fixed to each other in the lateral direction by the stirrup-piece 28 and rollers 29, the lateral reactions produced on the fuel assembly 2a by the grab 33 and the guide tube 35 cancel each other. In prior devices, lateral reaction inserted by the grab on the fuel assembly head has resulted in jamming of the fuel assembly, especially if this has exhibited swelling or curvature due to excessive irradiation.
Patent GB-776074-A (GB)
Title: Improvements connected with batch weighing apparatus
Inventor: JACOMBS LEONARD CHARLES
IPC: G01G19/34
Filed: 1954-07-29
Abstract: 776,074. Weighing apparatus. AVERY, Ltd., W. & T. Oct. 31, 1955 [July 29, 1954], No. 22121/54. Class 143. Apparatus for batching the constituents of a mixture comprises a single weighing device 2 (Fig. 1) the weight indicating spindle 1 of which is connected through a servo mechanism 4 with a shaft 9 on which are mounted switch units 10 each of which controls the feed mechanism for one constituent. As shown in Fig. 2 each switch unit comprises a face cam 13 adjustably mounted on an arm 12 secured to shaft 9, a cam follower 18 rotatably mounted on a bifurcated lever 17 which is pivoted on a sleeve 15, worm gearing 23, 25 which is operated by a control knob 27 (Fig. 1) to adjust the angular position of lever 17, a drum 24 which indicates the position of lever 17, a pair of links 19 which connect the lower ends of lever 17 with a flanged collar 20 keyed on sleeve 15, a bifurcated lever 21 which is pivoted to a fixed part of the apparatus at 60 and is spring urged into contact with the flange on collar 20, and a micro switch 22 which is actuated by the upper end of lever 21. In operation, each switch unit is set to the required weight and when each switch unit circuit is energized, material is fed to the hopper, at a fast rate. When the raised portion of cam 13 of the selected switch unit contacts the follower 18, lever 17 pivots, so sliding collar 20 and causing lever 21 to open the associated micro switch which then effects feeding at a reduced rate until the follower leaves the raised portion of cam 13 whereafter the switch is reclosed and the feed is stopped.
Patent GB-1011436-A (GB)
Title: Improvements in or relating to thermal defrosters
IPC: B64D15/12
Filed: 1964-05-28
Abstract: 1,011,436. Aircraft deicers. PNEUMATIQUES, CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER COLOMBES. May 28, 1964 [May 29, 1963], No. 22187/64. Drawings to Specification. Heading H5H. An aircraft deicer comprises an inner heater supporting layer, e.g. of rubber or neoprene in an unvulcanized state, and an external layer of polyurethane, the assembly being moulded on the part to which it is applied.
Patent GB-1255032-A (GB)
Title: Battery charging arrangements in road vehicles
Inventor: ALLPORT MAURICE JAMES
IPC: H02J7/24
Filed: 1968-05-10
Abstract: 1,255,032. Vehicle electrical apparatus arrangement. JOSEPH LUCAS (INDUSTRIES) Ltd. 2 May, 1969 [10 May, 1968], No.22233/68. Heading B7H.  In a vehicle having a water cooled I.C. engine and a battery charged by an engine-driven permanent-magnet alternator, means for rectifying and regulating the charging current are supported in heat exchange relationship with a body 31 having a passage therethrough connected in the engine coolant circuit. In Fig. 1, the body 31 is of hollow square cross-section and on three faces is mounted with an interposed mica insulator 32, a phase plate 33 connected to one phase of the alternator and on which is mounted two rectifying diodes, and a thyristor controlled in dependence on the battery voltage to " short " the phase when the battery voltage reaches a set value. End plates 43, 44 support a protective cover 46 and have hollow spigots 43a, 44a which are connected to coolant hoses. In an alternative (Figs. 3, 4, 5, not shown) the body (51) has a flat upper surface on which three parallel phase plates are mounted and coolant passes through a U-shaped passage between the lower surface of the body and a cover-plate (52).
Patent GB-500578-A (GB)
Title: Improvements in variable reactance transformers
IPC: H01F29/10
Filed: 1937-08-12
Abstract: 500,578. Transformers and inductances. BRITISH THOMSON-HOUSTON CO., Ltd., VIVIAN, G. E., and WELLINGS, J. G. Aug. 12; 1937, No. 22239. [Class 38 (ii)] To vary the reactance of a transformer or choke the core is provided with a pivotally mounted limb carrying the main winding or windings and the adjacent faces of core and limb are curved but have different centres of curvature so that the air gap therebetween may be varied to effect variation of reactance by angular movement of the limb. In the form shown in Fig. 1, the winding 1 is mounted on a movable limb 2 which co-operates with a ring core 3, the inner periphery of which is formed by two semicircles having displaced centres, so that angular movement of the limb 2 causes the air gaps at its ends to be varied. The limb is carried on a flanged ring 8 which fits over a ring attached to the core to centre the limb therein, clamping being effected by bolts 10 which pass through the casing. The ring 8 is graduated and a pointer is provided on the casing to give an indication of position. In a modification, the inner periphery of the core 3 is formed so that one of the air gaps remains constant. A further modification is shown in Fig. 5, in which the core limb 2 is mounted for movement by means of a member 17 having arcuate slots 18 at its ends which engage pins 19 on the core 3.
Patent GB-864972-A (GB)
Title: Improvements in and relating to roller sweepers
IPC: A47L11/22
Filed: 1959-06-29
Abstract: 864,972. Roller sweepers. BOLOGNINI, G. June 29, 1959 [July 18, 1958 ; April 3, 1959], No. 22246/59. Class 138(1). The cleaner roller 2 comprising bristles disposed radially around a shaft 3 is coaxial with the driving wheel 9 and connected thereto by means of a step-up gearing 12, 13. A casing 1 provided with a bottom suction aperture and with a top air discharge aperture houses the roller 2, a collecting receptacle 31 covering the top aperture and having a window in front of which is a screen of larger area thus forming a labyrinth path for the escaping air and separating from it the material picked up by the roller 2. The material transported by the air strikes the screen and falls to the bottom of the receptacle 31. The outer part of the top edge of the casing 1 is shaped over the whole of its length in the form of a hinge hook for holding in place the receptacle 31. In place of the receptacle 31 a guard may be used when cleaning is effected with the aid of wet sawdust, the sawdust swept up from the floor being caused by the guard to fall back in front of the sweeper so that the latter automatically carries out the work of rubbing the sawdust over the floor which is usually done by hand. The top edge of the casing 1 is also turned over towards the inside as indicated at 30 and this flange serves to hinder the reverse rotation of the roller 2 and, through the effect of their elasticity, to increase the speed at which the bristles free themselves from contact with the edge. The sweeper rests on the ground on four wheels, the aforesaid wheel 9, a corresponding wheel on the opposite side of the machine which is idle, and two smaller wheels 23 which cause the casing 1 to assume the desired angular position in relation to ,the floor so that a strip of felt 29 housed in a seat at the rear of the casing will brush the floor and prevent sweepings from escaping to the rear. In another embodiment in which a freewheel mechanism is incorporated in the gearing, the sweeper rests on the floor on only two wheels, of which one is the driving wheel, and on a rear strip of felt and the handle is articulated to the sweeper at a point offset in relation to the axis of the roller towards the felt in order to create a couple and hence apply pressure to the felt.
Patent GB-1420248-A (GB)
Title: Multiple-stage production of low sulphur fuel oil
IPC: C10G49/22
Filed: 1973-05-11
Abstract: 1420248 Hydrodesulphurization of heavy oils UOP Inc 11 May 1973 [12 May 1972] 22493/73 Heading C5E A black oil charge stock 1 is catalytically reacted with hydrogen at 3 and the effluent 4 is separated at 5, at substantially the same temperature and pressure, into a first liquid phase 6 and a first vaporous phase 7. Hydrogen sulphide is removed-at 12 from at least a portion 11 of the first vaporous phase to produce a hydrogen-rich stream 13 with which the liquid phase 6 is reacted in a second catalytic reaction zone 14. The effluent 19 from the zone 14 is separated at 20 to produce a second vaporous phase 2, of which at least a portion is recycled to the zone 3, and a second liquid phase 21. As shown the first vaporous phase 7 can be separated at 10 into a third vaporous phase 11 and a third liquid phase 15 from which a vent gas stream is separated at 16 leaving a recycle stream 9 and a product stream 18 comprising mainly heptane to light fuel oil. A water stream 8 can be incorporated in the feed to the second reactor 14 and is recovered from the cold separator 10. The feedstocks treated can be crude oils, atmospheric or vacuum residues, heavy cycle oil, tar sand oil or heavy gas oil. The catalytic hydrogenation in both zones 3 and 20 can be carried out at 200-3000 p.s.i.g. and 600-900 F. using a catalyst, such as Cr, Mo, W or the Group VIII metals as the metal, oxide or sulphide on a support, such as alumina, alumina-silica, mordenite, faujasite or zeolite A or U, which can comprise halogen, zinc and/or bismuth components.
Patent GB-1166585-A (GB)
Title: Improvements in or relating to Shoes
IPC: A43B13/08
Filed: 1968-05-13
Abstract: 1,166,585. Boots &c. GEONS TRASKOFABRIK OLSSON & CO. 13 May, 1968 [12 May, 1967], No. 22639/68. Heading A3B. A shoe has a wooden sole 1 with a joint 7 in the region of the ball of the foot and a leather upper 2 with a bellows element 9 inserted in the upper 2 above the joint 7. The joint is formed by a V-shaped groove between sole parts 4, 5 and a plate 6 of leather or synthetic plastics. A rubber outsole 8 is glued to the sole bottom and follows the sides of the groove, the outsole being connected to the plate 6 at the apex of the groove. A strap 3 is pivoted to the upper 2 and can be used as a heel strap or an instep supporting strap (not shown).